161 lines
3.8 KiB
Go
161 lines
3.8 KiB
Go
package meta
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import (
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"encoding/json"
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"regexp"
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"strings"
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"github.com/photoprism/photoprism/pkg/clean"
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"github.com/photoprism/photoprism/pkg/fs"
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"github.com/photoprism/photoprism/pkg/txt"
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)
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var UnwantedDescriptions = map[string]bool{
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"Created by Imlib": true, // Apps
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"iClarified": true,
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"OLYMPUS DIGITAL CAMERA": true, // Olympus
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"SAMSUNG": true, // Samsung
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"SAMSUNG CAMERA PICTURES": true,
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"<Digimax i5, Samsung #1>": true,
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"SONY DSC": true, // Sony
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"rhdr": true, // Huawei
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"hdrpl": true,
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"oznorWO": true,
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"frontbhdp": true,
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"fbt": true,
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"rbt": true,
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"ptr": true,
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"fbthdr": true,
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"btr": true,
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"mon": true,
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"nor": true,
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"dav": true,
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"mde": true,
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"mde_soft": true,
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"edf": true,
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"btfmdn": true,
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"btf": true,
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"btfhdr": true,
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"frem": true,
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"oznor": true,
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"rpt": true,
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"burst": true,
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"sdr_HDRB": true,
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"cof": true,
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"qrf": true,
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"fshbty": true,
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"binary comment": true, // Other
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"default": true,
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"Exif_JPEG_PICTURE": true,
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"DVC 10.1 HDMI": true,
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"charset=Ascii": true,
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}
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var LowerCaseRegexp = regexp.MustCompile("[a-z\\d_\\-]+")
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// SanitizeUnicode returns the string as valid Unicode with whitespace trimmed.
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func SanitizeUnicode(s string) string {
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if s == "" {
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return ""
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}
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return clean.Unicode(strings.TrimSpace(s))
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}
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// SanitizeString removes unwanted character from an exif value string.
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func SanitizeString(s string) string {
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if s == "" {
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return ""
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}
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if strings.HasPrefix(s, "string with binary data") {
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return ""
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} else if strings.HasPrefix(s, "(Binary data") {
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return ""
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}
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return SanitizeUnicode(strings.Replace(s, "\"", "", -1))
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}
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// SanitizeUID normalizes unique IDs found in XMP or Exif metadata.
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func SanitizeUID(s string) string {
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s = SanitizeString(s)
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if len(s) < 15 {
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return ""
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}
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if start := strings.LastIndex(s, ":"); start != -1 {
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s = s[start+1:]
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}
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// Not a unique ID?
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if len(s) < 15 || len(s) > 36 {
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s = ""
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}
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return strings.ToLower(s)
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}
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// SanitizeTitle normalizes titles and removes unwanted information.
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func SanitizeTitle(title string) string {
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s := SanitizeString(title)
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if s == "" {
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return ""
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}
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result := fs.StripKnownExt(s)
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if fs.IsGenerated(result) || txt.IsTime(result) {
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result = ""
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} else if result == s {
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// Do nothing.
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} else if found := LowerCaseRegexp.FindString(result); found != result {
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result = strings.ReplaceAll(strings.ReplaceAll(result, "_", " "), " ", " ")
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} else if formatted := txt.FileTitle(s); formatted != "" {
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result = formatted
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} else {
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result = txt.Title(strings.ReplaceAll(result, "-", " "))
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}
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return result
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}
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// SanitizeDescription normalizes descriptions and removes unwanted information.
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func SanitizeDescription(s string) string {
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s = SanitizeString(s)
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switch {
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case s == "":
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return ""
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case UnwantedDescriptions[s]:
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return ""
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case strings.HasPrefix(s, "DCIM\\") && !strings.Contains(s, " "):
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return ""
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default:
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return s
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}
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}
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// SanitizeMeta normalizes metadata fields that may contain JSON arrays like keywords and subject.
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func SanitizeMeta(s string) string {
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if s == "" {
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return ""
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}
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if strings.HasPrefix(s, "[") && strings.HasSuffix(s, "]") {
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var words []string
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if err := json.Unmarshal([]byte(s), &words); err != nil {
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return s
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}
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s = strings.Join(words, ", ")
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} else {
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s = SanitizeString(s)
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}
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return s
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}
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